<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddpage">添加商品</el-button>
                </el-col>
            </el-row>

            <!-- 表格区域 -->
            <el-table :data="goodsList" style="width: 100%" stripe border>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column prop="goods_name" label="商品名称">
                </el-table-column>
                <el-table-column prop="goods_price" label="商品价格(元)" width="95px">
                </el-table-column>
                <el-table-column prop="goods_weight" label="商品重量" width="70px">
                </el-table-column>
                <el-table-column label="创建时间" width="140px">
                    <template v-slot="scope">
                        {{ scope.row.add_time | dateFormat }}
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="130px">
                    <template v-slot="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit"></el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete"
                            @click="clearGood(scope.row.goods_id)"></el-button>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 20, 30]" :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper" :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>

<script>
export default {
    name: 'goods_list',
    data() {
        return {
            // 商品列表数据
            goodsList: [],
            // 请求体对象
            queryInfo: {
                // 查询参数
                query: '',
                // 当前页码
                pagenum: 1,
                // 每页显示条数
                pagesize: 20
            },
            // 数据总条数
            total: 0
        }
    },
    mounted() {
        this.getGoodsList()
    },
    methods: {
        // 获取商品列表数据
        async getGoodsList() {
            const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
            if (res.meta.status !== 200) return this.$message.error('请求商品列表数据失败！')
            // this.$message.success('获取商品列表数据成功!')
            this.goodsList = res.data.goods
            this.total = res.data.total
            // console.log(res.data);

        },
        // 监听每页显示条数发生变化事件
        handleSizeChange(val) {
            this.queryInfo.pagesize = val
            this.getGoodsList()
        },
        // 监听当前页发生变化事件
        handleCurrentChange(val) {
            this.queryInfo.pagenum = val
            this.getGoodsList()
        },
        // 点击删除商品
        async clearGood(id) {
            // 弹窗用户是否要删除
            const confirmResult = await this.$confirm(`此操作将永久删除该商品, 是否继续?`, '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            // 如果用户确认删除，则返回值为字符串 confirm
            // 如果用户取消了删除，则返回值为字符串 cancel
            if (confirmResult === 'confirm') {
                const { data: res } = await this.$http.delete(`goods/${id}`)
                if (res.meta.status !== 200) return this.$message.error('删除失败！')
                this.$message.success('删除成功！')
                this.getGoodsList()
            } else {
                this.$message.info('已取消删除')
            }
        },
        // 点击跳转到添加商品页面
        goAddpage(){
            this.$router.push('goods/add')
        }
    }
}
</script>

<style lang="less" scoped></style>